package com.example.demo.customer;

import com.example.demo.exception.NotFoundException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;


import java.util.List;
import java.util.Objects;

@Service

public class CustomerService {

    private final CustomerRepo customerRepo;
    @Autowired
    public CustomerService(CustomerRepo customerRepo){
        this.customerRepo =customerRepo;
    }

    List<Customer> getCustomers() {
        return customerRepo.getCustomers();
    }
    Customer getCustomer(Long id){
        return getCustomers()
                .stream()
                .filter(customer -> Objects.equals(customer.getId(), id))
                .findFirst()
                .orElseThrow(() -> new NotFoundException("customer " +id+  "无法找到"));

    }
}